But when we're thinking about actual wave behavior of electrons, it's just important to keep in the back of our head that some areas have positive amplitude and some have negative.

电子的波动行为时,我们，要记住,某些地方是正的,某些地方是负的,当我们讲到。

麻省理工公开课 - 化学原理课程节选

Watching the descent of consumer prices this past spring, it looked like CPI growth would approach zero by the end of the summer and then head into negative territory.

FORBES: The Printing Press Produces Inflation, Just Not Where It's Needed

However, this is the first study to film and observe an ape shaking its head in a negative context to stop or prevent other bonobo behaviour.

BBC: Earth News - Bonobo chimps filmed shaking their head to 'say no'

Fearing financial turmoil, people prefer to spend money than to save, particularly when real interest rates are negative, says Sergei Guriev, head of the New Economic School.

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